Whiteside was called up from Triple-A Iowa when Castillo hit the DL earlier this month. Whiteside hit only .120/.115/.160 in 26 PA over eight games with Chicago, his first taste of big league action since 2012 when he was a member of the Giants. The 34-year-old signed a minor league deal with the Cubs in the offseason and Miles believes Whiteside will return to Iowa if he isn’t claimed.